JP6445121B1 - PCB cassette - Google Patents

Abstract

A substrate cassette having excellent vibration absorbing performance is provided. A cassette frame surrounding a storage space for storing a substrate, and a cassette frame protruding from the cassette frame into the storage space along a predetermined first direction. Supporting means capable of supporting each substrate housed in the bottom from below, each supporting means extending in the first direction from a portion formed in a hollow and in contact with the cassette frame, and upward A support tube with two mounting holes that open facing each other, an insertion portion that is inserted into the attachment hole, and an exposed portion that is attached to the upper end of the insertion portion and is exposed to the outside of the support tube. And two pad bolts respectively attached to the two mounting holes, and a vibration absorber made of a vibration absorbing material and sandwiched between the insertion portions of the two pad bolts, It comprises a.
[Selection] Figure 3

Description

    The present invention relates to a substrate cassette that can store substrates.

    In recent years, the size of flat-screen televisions has been increasing in order to meet consumer demand. Therefore, a glass substrate having a large size is required for use in such a thin television. In manufacturing a glass substrate, in order to prevent damage that occurs when the glass substrate is transported, it is known to perform the transport operation after storing the glass substrate using a conventional substrate cassette disclosed in Patent Document 1, for example.

    FIG. 1 describes an example of a conventional substrate cassette 1 in Patent Document 1. FIG. 1 is a sectional view of the conventional substrate cassette 1 viewed from the front. The conventional substrate cassette 1 includes a bottom plate 11, an upper plate 13 parallel to the bottom plate 11, a pair of side plates 12 which are interposed between the bottom plate 11 and the upper plate 13 and face each other with a space therebetween. A plurality of support means 14 are provided so as to project from the two side plates 12 toward the storage space defined between the two side plates 12 in a symmetrical manner. Each support means 14 is provided with a support pad 15 protruding upward. When the substrate is stored, the substrate is supported by two support pads 15 having the same horizontal position.

Taiwan Patent No. I590994 Specification

  The support means 14 in the above-described substrate cassette 1 lacks stability simply because the support pad 15 protrudes upward from the support means 14, so that it cannot exhibit satisfactory vibration absorption performance and transports the substrate. Since the vibration at the time cannot be sufficiently suppressed, there is a high probability that the substrate is damaged by the vibration.

  Therefore, in view of the above problems, the present invention aims to provide a substrate cassette excellent in vibration absorption performance.

  In order to achieve the above object, an embodiment according to the present invention is a substrate cassette capable of storing substrates, a cassette frame surrounding a storage space for storing substrates, and a predetermined first direction from the cassette frame. Projecting into the storage space, and supporting means capable of supporting each of the substrates stored in the storage space from below. A support tube that extends along the first direction from the contact point and has two attachment holes that open upward and open, an insertion portion that is inserted into the attachment hole, and an upper end of the insertion portion Are exposed to the outside of the support tube, and have exposed portions made of a vibration absorbing material, and are respectively attached to the two mounting holes. And One of the pad bolt, is created by the vibration absorbing material to provide a substrate cassette comprising a, a vibration absorber is sandwiched between the insertion portion of each of the two pads bolts.

  With the above configuration, for example, the insertion portion of the two pad bolts in each support means is configured to sandwich the vibration absorber, and by increasing the stability of the pad bolt installed in the support means, the vibration absorbing material of the pad bolt Since the exposed portion created by the method can sufficiently exhibit its vibration absorption performance, it is possible to realize a substrate cassette that can suppress the probability of the glass substrate being damaged by vibration during conveyance.

It is sectional drawing which shows the conventional board | substrate cassette. It is sectional drawing by which embodiment of the substrate cassette by this invention is shown. It is sectional drawing by which the support means in this embodiment is shown. It is a time transition graph which shows the amplitude of the vibration measured using the conventional substrate cassette. It is a time transition graph which shows the amplitude of the vibration measured using this embodiment by the present invention.

  Hereinafter, a preferred embodiment of a substrate cassette 3 constituted according to the present invention will be described in detail with reference to the accompanying drawings.

  This will be described with reference to FIGS. Here, FIG. 2 is a sectional view showing an embodiment of the substrate cassette 3 according to the present invention, and FIG. 3 is a sectional view showing the support means 5 in the embodiment. The substrate cassette 3 projects from the cassette frame 4 surrounding the storage space for storing the glass substrate A toward the storage space, and supports each glass substrate A stored in the storage space from below. A plurality of support means 5 capable of doing so.

  The cassette frame 4 includes a bottom plate 41 provided parallel to the horizontal plane, an upper plate 43 provided above the bottom plate 41 via a storage space and provided substantially parallel to the bottom plate 41, and the above-described bottom plate 41. Two side plates 42 provided between the bottom plate 41 and the upper plate 43 so as to define the accommodation space together with the upper plate 43 and extending so as to be substantially orthogonal to the bottom plate 41 and the upper plate 43 are provided. .

  Each support means 5 is formed in a hollow shape and extends from one of the two side plates 42 toward the other side plate 42, and on the upper side as shown in FIG. A plurality of pairs of support tubes 51 with two mounting holes 514 opened, two pad bolts 52 respectively mounted on the two mounting holes 514, and a vibration absorbing material, A vibration absorber 53 sandwiched therebetween. Each of the pair of support tubes 51 protrudes from the two side plates 42 into the storage space along the horizontal direction, and supports the same glass substrate A with pad bolts 52.

  In this embodiment, the support tube 51 is detachably attached to the cassette frame 4. Each pad bolt 52 has an insertion portion 521 inserted into the attachment hole 514 and an exposed portion 522 made of a vibration absorbing material and attached to the upper end of the insertion portion 521 and exposed outside the support tube 51. . Further, the vibration absorber 53 is sandwiched between the two insertion portions 521. In this embodiment, the vibration absorber 53 includes plasticized polyvinyl chloride (PVC), thermoplastic polyurethane (TPU), polypropylene (PP), polyethylene (PE), ethylene vinyl acetate copolymer (EVA), polyol ester ( Made of at least one material selected from the group consisting of POE), ethylene propylene rubber (EPDM), polyolefin, styrene-butadiene block copolymer (SEBS), and plasticizer, and, for example, It is prepared so that energy in vibration can be absorbed and converted into heat by a manufacturing method such as melt foam molding, extrusion molding, or injection molding.

  Before installing the support means 5 on the cassette frame 4, the vibration absorber 53 is previously placed in a hollow support tube 51 and installed at a predetermined position or where the user wants to install it. Finally, the two pad bolts 53 are inserted and attached to the two attachment holes 514 corresponding to the position and size of the vibration absorber 53.

  By doing so, the two insertion portions 521 can hold the vibration absorber 53 closely. Each glass substrate A is supported by at least two support means 5 installed in the same position in the horizontal direction. By carrying out like this, when conveying a glass substrate, for example, the energy in the vibration conducted from the cassette frame 4 to the glass substrate through the supporting means can be absorbed by the vibration absorber 53 and converted into heat. A can be prevented from being damaged by vibration. Further, when replacing another vibration absorber 53 or changing the installation location, it is only necessary to insert the two pad bolts 53 into the two mounting holes 514 according to the other vibration absorber 53 and mount them. can do.

  The vibration absorption effect by the support means 5 in this embodiment is demonstrated referring FIG. 4 and FIG. Here, FIG. 4 is a time transition graph showing the amplitude of vibration measured using a conventional substrate cassette, and FIG. 5 is a time showing the amplitude of vibration measured using the support means 5 in the embodiment according to the present invention. It is a transition graph. In order to measure the effect of vibration absorption, a displacement sensor LK-086 manufactured by Keyence Corporation is used. As a measurement method, a displacement sensor is installed toward the support means 14 and the support means 5 directly above the support means 14 of the conventional substrate cassette and the support means 5 of this embodiment. When the displacement sensor is activated, the laser beam output from the laser diode included in the displacement sensor is reflected after being straight and hitting the support means 14 or the support means 5, respectively, and a part of the reflected light is reflected. The laser beam returns to the displacement sensor. Thus, when the support means 14 of FIG. 1 which shows a prior art, and the support means 5 of a present Example each displace, those displacement amounts can be measured with a displacement sensor. When measuring, the time from when the vibration is artificially generated until the vibration amplitude is reduced to 1.5 millimeters or less is measured. The measurement results are displayed in a graph as shown in FIGS. 4 and 5, in which the horizontal axis indicates time in seconds and the vertical axis indicates amplitude in millimeters. As a result of actual measurement, the conventional substrate cassette requires about 1 second until the amplitude of vibration is reduced to 1.5 millimeters or less, but the substrate cassette 3 of the present embodiment has an amplitude of only 0.042 seconds and 1 amplitude. Reduce to less than 5 millimeters. Thus, it is obvious that the vibration absorption performance of the present embodiment is superior to the conventional substrate cassette.

  As described above, by holding the vibration absorber 53 between the two pad bolts 52, the substrate cassette 3 having more excellent vibration absorption performance can be realized. Further, the position of the pad bolt 52 can be changed according to the size and position of the vibration absorber 53.

3 Substrate cassette 4 Cassette frame 41 Bottom plate 42 Side plate 43 Top plate 5 Support means 51 Support tube 514 Mounting hole 52 Pad bolt 521 Insertion part 522 Exposed part 53 Vibration absorber A Substrate

Claims (3)

A substrate cassette that can store substrates,
A cassette frame surrounding a storage space for storing the substrate;
At least one support means that protrudes from the cassette frame into the storage space along a predetermined first direction and can support the substrates stored in the storage space from below;
With
The support means is
A support tube which is formed in a hollow and extends along the first direction from a position in contact with the cassette frame, and has two attachment holes opened upward;
An insertion portion inserted into the attachment hole, an exposed portion attached to the upper end of the insertion portion and exposed to the outside of the support tube, and made of a vibration absorbing material, and 2 Two pad bolts respectively attached to the two mounting holes;
A vibration absorber made of a vibration absorbing material and sandwiched between the respective insertion portions of the two pad bolts;
A substrate cassette characterized by comprising: The first direction is parallel to a horizontal plane;
The cassette frame is interposed between the bottom plate parallel to the horizontal plane, the top plate substantially parallel to the bottom plate, the bottom plate and the top plate, and extends so as to be substantially orthogonal to the bottom plate and the top plate. With two side plates,
The support means is
A pair of the support tubes, two pad bolts attached to each of the support tubes, and the vibration absorber sandwiched between the two pad bolts. 2. The substrate cassette according to claim 1, wherein the support tube protrudes from the two side plates into the storage space along the horizontal direction and supports the same substrate with the pad bolt. 3.   The vibration absorbers are plasticized polyvinyl chloride (PVC), thermoplastic polyurethane (TPU), polypropylene (PP), polyethylene (PE), ethylene vinyl acetate copolymer (EVA), polyol ester (POE), ethylene propylene. The rubber is produced using at least one material selected from the group consisting of rubber (EPDM), polyolefin, styrene-butadiene block copolymer (SEBS), and a plasticizer. The substrate cassette according to claim 2.

Images